Respuesta :

budwilkins
c = 1/2(a - b), where a is biggest arc and c is outside angle
51 = 1/2(160-x)
51×2 = 1/2×2 (160-x)
102 = 160 - x
102-160 = 160-160 - x
-x = -58
x = 58
58 is the answer for sure

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